Results 91 to 100 of about 2,357 (209)
Performance Analysis on ISAR Imaging of Space Targets
Leida xuebao, 2017 Usually, in traditional Inverse Synthetic Aperture Radar (ISAR) systems design and mode selection for space satellite targets, coherent integration gain in azimuth direction hardly can be analyzed, which depends on target’s motion.
Zhou Yejian +3 more
doaj +1 more source
A Novel Wide Area Multiple Azimuth Beam ISAR Imaging System
IEEE Access, 2019 A novel multiple azimuth beams (MAB) inverse synthetic aperture radar (ISAR) system, as well as, the corresponding processing algorithms are proposed in this paper, which is a promising technology for wide area surveillance (WAS).
Taoli Yang +3 more
doaj +1 more source
2-D Coherence Factor for Sidelobe and Ghost Suppressions in Radar Imaging [PDF]
, 1956 The coherence factor (CF) is defined as the ratio of coherent power to incoherent power received by the radar aperture. The incoherent power is computed by the multi-antenna receiver based on only the spatial variable.
Li, Shiyong +4 more
core +3 more sources
140GHz帯ミリ波レーダのためのRPM法による高速・高精度立体画像化 [PDF]
, 2016 超広帯域レーダは高い距離分解能を有し，光学センサの運用が困難な状況で計測が可能であり，有用とされている．近年，140GHz帯の超広帯域レーダが，装置の小型化や高分解能化の観点から注目されており．建設現場における重機の目標物認識センサや救助ロボット，高齢者見守りシステム等に有用とされている．目標形状の画像化技術として，既に合成開口処理(SAR: Synthetic Aperture Radar)や，SEABED(Shape Estimation Algorithm based on Boundary ...
Yuta Sasaki, 佐々木 優太
core +1 more source
Long-Time Observation-Based Multiattitude ISAR Imaging Method for Moving Ships
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingLong-time synthetic aperture radar observation facilitates the tracking and identification of moving targets. However, continuous changes in the attitude of a moving target during long-duration observations cause the azimuth signal’s time– ...
Zhifeng Xie +4 more
doaj +1 more source
Robust method for ship recognition based on ISAR imaging using 3D model
The Journal of Engineering, 2019 This study develops a robust method for ship target recognition, based on inverse synthetic aperture radar (ISAR) image matching with the template of 3D model.
Sudao D. Xie, M.Y. Pan, D.S. Li
doaj +1 more source
Impact and Compensation of Rainfall Propagation Effect on Pol-ISAR Imaging of Parabolic Antenna
Remote SensingOrientation is an important parameter to identify the working status of a parabolic antenna. Polarimetric inverse synthetic aperture radar (Pol-ISAR) is an effective approach to sense the parabolic antenna, but the imaging process may be seriously ...
Xinjie Ju +5 more
doaj +1 more source
ISAR Imaging of a Rotating Asteroid Irradiated by Pulsar’s Electromagnetic Emission
Cybernetics and Information Technologies, 2019 The aim of the present study is imaging of moving objects, asteroids illuminated by continuous coherent wideband pulsar’s signals. As pulsars are located on more than thousands of light years from Earth, objects crossing pulsars’ emission beams are ...
Lazarov Andon D.
doaj +1 more source
Bistatic image processing for a 32 x 19 inch model aircraft using scattered fields obtained in the OSU-ESL compact range [PDF]
Inverse Synthetic Aperture Radar (ISAR) images for a 32 in long and 19 in wide model aircraft are documented. Both backscattered and bistatic scattered fields of this model aircraft were measured in the OSU-ESL compact range to obtain these images.
Burnside, W. D., Lee, T-H.
core +1 more source
With the rapidly growing population of resident space objects (RSOs) in the near-Earth space environment, detailed information about their condition and capabilities is needed to provide Space Domain Awareness (SDA). Space-based sensing will enable inspection of RSOs at shorter ranges, independent of atmospheric effects, and from all aspects.
Coe, Morgan +3 more
openaire +2 more sources